diff options
| author | lloyd <[email protected]> | 2008-09-28 19:29:24 +0000 |
|---|---|---|
| committer | lloyd <[email protected]> | 2008-09-28 19:29:24 +0000 |
| commit | 9bcfe627321ddc81691b835dffaa6324ac4684a4 (patch) | |
| tree | fe5e8ae9813b853549558b59833022e87e83981b /src/asm/asm_ia32/mp_mulop.S | |
| parent | 9822a701516396b7de4e41339faecd48ff8dc8ff (diff) | |
Move all modules into src/ directory
Diffstat (limited to 'src/asm/asm_ia32/mp_mulop.S')
| -rw-r--r-- | src/asm/asm_ia32/mp_mulop.S | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/asm/asm_ia32/mp_mulop.S b/src/asm/asm_ia32/mp_mulop.S new file mode 100644 index 000000000..a5f0d3b27 --- /dev/null +++ b/src/asm/asm_ia32/mp_mulop.S @@ -0,0 +1,62 @@ +/************************************************* +* Multiply/Add Algorithm Source File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#include <botan/asm_macr.h> + +START_LISTING(mp_muladd.S) + +START_FUNCTION(bigint_mul_add_words) + SPILL_REGS() +#define PUSHED 4 + +#define LOOP_CTR ESI + ASSIGN(LOOP_CTR, ARG(3)) /* x_size */ + ZEROIZE(EDI) + + ASSIGN(ECX, ARG(1)) /* z[] */ + ASSIGN(EBX, ARG(2)) /* x[] */ + ASSIGN(EBP, ARG(4)) /* y */ + +#define MULADD_OP(N) \ + ASSIGN(EAX, ARRAY4(EBX, N)) ; \ + MUL(EBP) ; \ + ADD_W_CARRY(EAX, EDX, EDI) ; \ + ASSIGN(EDI, EDX) ; \ + ADD_W_CARRY(ARRAY4(ECX, N), EDI, EAX) ; + + JUMP_IF_ZERO(LOOP_CTR, .MUL_ADD_DONE) + JUMP_IF_LT(LOOP_CTR, 8, .MULADD1_LOOP) + +START_LOOP(.MULADD8) + MULADD_OP(0) + MULADD_OP(1) + MULADD_OP(2) + MULADD_OP(3) + MULADD_OP(4) + MULADD_OP(5) + MULADD_OP(6) + MULADD_OP(7) + + SUB_IMM(LOOP_CTR, 8) + ADD_IMM(EBX, 32) + ADD_IMM(ECX, 32) +LOOP_UNTIL_LT(LOOP_CTR, 8, .MULADD8) + + JUMP_IF_ZERO(LOOP_CTR, .MUL_ADD_DONE) + +START_LOOP(.MULADD1) + MULADD_OP(0) + + SUB_IMM(LOOP_CTR, 1) + ADD_IMM(EBX, 4) + ADD_IMM(ECX, 4) +LOOP_UNTIL_EQ(LOOP_CTR, 0, .MULADD1) + +.MUL_ADD_DONE: + + ASSIGN(EAX, EDI) +#undef PUSHED + RESTORE_REGS() +END_FUNCTION(bigint_mul_add_words) |